Loom-shuttle block



July 29, 1924. Y 1,502,963

-G. R. PLOTT LOOM SHUTTLE BLOCK Filed Jan. 19, 1923 Patented July 29, 1 924.

GEORGE R. PLOTT, OF HILLS-BORQ, NORTH CARYQL-INA.

' LOOM-SHUTTLE BLOCK;

Applicationfiled January 19, 1923'. Serial No. 613,678.

To all whom, itmay concernz' I iBe-it known that GEORGE E. PLOTT, a citizen of the United States, residing at Hillsboro, in the county of Orange and State of -5 North Carolina, has invented certain new and useful Improvements in Loom-Shuttle Blocks, of which the following is a specification:

This invention relates to improvementsin 1 loom shuttles and-more particularly to an improved tensioning means for the filling.

At the present time considerable delay and inconvenience is experienced in packing loom, shuttle threading blocks with flannel -;1 to suitably tension the filling andprevent kinking thereof with the consequent defects in the weave. The means ordinarily providedv for retaining the pieces of flannel in place are usually so formed and located that 2 it is a tedious task to remove the worn pieces and supply new ones. The present invention "therefore has as one of its primary objects to provide means whereby this task may be more conveniently; and expeditiously performed, the means for supporting the tensioning element or piece of flannel, being adapted to be instantly applied to: and removed from the threading block and being v,further so constructed that little difiiculty will be experienced and little time consumed in replenishing the supporting means with the friction material when the latter'has bet come worn.

vAnother equally important object of the invention is to so construct and arrange the friction element supporting means upon the threading block that it will most effectually perform its function and belocated in such position as to most effectually insure against kinking of the, filling.

" In the accompanying drawings: 7

, Figure 1 is-a perspective view of the tensioning means embodying the invention applied to a loom shuttle threading block;

I Figure 2 is a perspective view of the tensioning deviceand the threading block, the two parts being relatively separated and being shown inverted in order to better illustrate the structure; 7 Y

, 1 The tensioning device embodying the invention is illustrated in the drawings as employed inconnection with a well-known loom shuttle threading block which is indicated in general by the numeral 1 and comprises the usual body 2 having the anchoring stud 3 upon its underside and being formed with the usual slot t providing for the threading of the filling therethrough. The

usual guard 5 overlies the slot 4, and the block is formed with the usual nose '6 and beak 7, the beak, as usual, being located in front of the body 2. For the purposes of the present: invention, the body 2, in rear of the beak 7, is formed with a recess 4;.

1 The tensioning devicefcomprises a supporting member and a friction element supported thereby, and the said supporting member is indicated in the drawings by the numeral 8 and is preferably formed from a rectangular sheet metal blank such as shown in Figure 5 of the drawings. The said suprsurorrics. v.

Figure 3 is a perspective view of the supporting "member comprises an attaching a.

portion 9 which is flat and formed with an opening 10. At the forward side of the opening 10, the blank is bent along a transverse line to provide a tongue portion 11 extending in a plane substantially at right angles to the plane of the attaching ortion 9, The blank is bent back upon 'itse f so as to provide a ,lip 12 which depends in front of and in spaced relation to the portion 11,

the bend, indicated bythe numeral 13, being,

preferably rounded, and the end of the lip 12 being, if desired, beveled as at 14. An opening15is formed in the blank at the point of location of the bend 13 so that the rounded supporting shoulder provided by the bend is in effect recessed or notched at its intermediate portion. The friction or' tensioning element heretofore referred to is indicated by the numeral 16 and the same comprises a rectangular piece of flannel or other suitable friction material, one end of which is inserted into the space between the portion 11 and lip 12 and thus anchored, the piece of material being led over the beveled edge 14 of the lip 12 and about the outer side of this lip, over the rounded shoulder 13, and downwardly beside the rear face of the portion 11. The piece of friction material 16 is of a width corresponding to the width of the portion 11 and lip 12 and consequently substantially covers the shoulder l3 and the notch or recess 15 formed. therein, the material spanning this notch or recess, as will be evident by reference to Figure 4.

It will be evident by reference to the drawings, that the friction element 16 may be readily assembled with the supporting member S, and when this has been done, the tensioning device is assembled with the threading block 1 by fitting it to the block with the anchoring stud 3 fitting through the opening 10 in the attaching portion 9 of the supporting member and with the tongue portion 11 of said member extending upwardly beside the forward face of the body 2 and with the shoulder 13 located within the recessd in the said body. lVith the tensioning device so assembled with the threading block, the portion of the friction element which spans the notch or recess 15 is supported directly in the path of the passage of the fillin g through the slot in the threading block,

and the filling in its passage over and in in contact with this portion of the friction element, will be tensioned to such degree as to insure against the formation of kinks therein. As pointed out above one end of the piece of cloth comprising the friction element 16 is anchored behind the lip 12, and it will be evident that the other end of the piece of cloth is frictionally confined between the forward face of the body 2 and the rear face of the tongue portion 11 of the sup porting member 8. Consequently the piece of friction material will be more or less snugly stretched over the shoulder 18 and the notch or recess 15 formed therein. As the portion of the element 16 over which the filling passes extends over the notch or recess 15, it is not afforded positive support, and therefore the filling is not unduly tensioned but only to such degree as to insure against kinking of the same.

It will be evident from the foregoing that when the friction or tensioning element 16 becomes worn, the threading block may be readily removed from the shuttle, the sup porting member 8 separated therefrom, the worn element 16 removed, and a new piece of friction material substituted therefor, the parts being then adapted to be instantly reassembled thereby obviating the tedious and time-consuming task of packing the friction material into recesses such as have previously been provided in the threading block for the reception thereof.

Having thus described the invention, what is claimed as new is:

1. The combination with a loom shuttle threading block having an anchoring stud and a filling slot, of tensioning means for the filling comprising a supporting member removably fitted to the said stud and having one end projecting in front of the block, and a friction'element carried by the projecting end of the supporting member in juxtaposition to the slot.

2. The combination with a loom shuttle threading block comprising a body having an anchoring stud upon its under side and provided with a slot for the passage of the filling, of tensioning means for the filling comprising a supporting member having an attaching portion removably fitted to the said stud and having also a tongue portion extending from the attaching portionbeside one end of the body and overturned to provide a coacting lip, and a friction element comprising a piece of friction material anchored at one end between the lip and tongue and extending over the junction of the two and engaging at its other end between the said tongue and the said end of the body of the threading block.

3. The combination with. a loom shuttle threading block having a slot for the passage of the filling, of tensioning means. for the filling comprising a member having a supporting portion located in juxtaposition to the slot and beyond. the end of the block, and a friction element comprising a piece of friction material extending over and carried by the said supporting portion of the member and freely removable therefrom.

4. The combination with a loom shuttle threading block provided with a slot for the passage of the filling, of tensioning means for the filling comprising a supporting member having a supporting portion located in juxtaposition to the slot and provided with a recess, and a friction element comprising a piece of friction material covering the said supporting portion and spanning the recess therein and held against the block by said supporting portion.

5. As a new article of manufacture, a tensioning device for a loom shuttle threading portion comprising a supporting member having an attaching portion to be secured against the bottom of the block and a supporting portion and anchoring means extending upwardly adjacent the receiving end of the block, and a friction element comprising a piece of friction material anchored by the said anchoring means and extended over the supporting'portion of the said member and held thereby against the end of the block.

6. As a new article of manufacture, a tensioning device for a loom shuttle threading block comprising a supporting member having an attaching portion to be secured against the bottom of the block and a sup porting portion and anchoring means projecting upwardly adjacent and spaced from the receiving end of the block, and a friction element comprising a piece of friction mate- 10 rial anchored by'the said anchoring means and extended over the supporting portion of the said member, the supporting portion of the said member being provided with a recess covered by the said friction material, said friction material being held between said. supporting portion and the end of the block.

In testimony whereof I affix my signature.

GEORGE R. PLOTT. L. 5. 

